<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
    <style>
        .yeye{
            width: 150px;
            height: 250px;
            background-color: yellowgreen;
        }
        .parent{
            width: 180px;
            height: 180px;
            background-color: palevioletred;
        }
        .child{
            width: 100px;
            height: 100px;
            background-color: sandybrown;
        }
    </style>
</head>
<body>
    <div id="app">
        <!-- 1.表单修饰符 lazy trim number -->
        <!-- <h3>1.表单修饰符</h3> -->
        <!-- <div>val:{{val}}</div>
        <input type="text" v-model.lazy.trim="val">
        -->
        <!-- <input type="text" v-model.trim="val" -->

        <!-- 2.鼠标按键修饰符 .left .right -->
        <!-- <button @click="_click(0)">点击事件</button>
             <button @click.left="_click(1)">点击事件.left</button>
             <button @click.right="_click(2)">点击事件.right</button>
        -->

        <!-- 3.v-bind属性修饰符 camel(openDoor) prop-->
        <!-- <input type="text" :name="" :value="" :index.prop="1" -->

        <!-- 4.事件修饰符 -->
        <!-- 
            .prevent 阻止默认行为
            .stop 阻止事件传播
            .self 出发的目标元素是自己才执行
            .capture 实现事件监听
            .once 一次性事件绑定
         -->
         <!-- .prevent 阻止默认行为 -->
         <button @contextmenu.prevent="yj">鼠标右击事件</button>
         <!-- .stop 阻止事件传播 -->
         <div class="yeye" @click="_yeye()">
            yeye
            <div class="parent" @click="_parent()">
                parent
                <div class="child" @click.stop="_child()">
                    child
                </div>
            </div>
         </div>
          <!-- .self 触发的目标元素是自己才执行 -->
          <div class="yeye" @click.self="_yeye()">
            yeye
            <div class="parent" @click="_parent()">
                parent
                <div class="child" @click="_child()">
                    child
                </div>
            </div>
         </div>

         <!-- .capture 实现事件（监听） -->
         <div class="yeye" @click.capture="_yeye()">
            yeye
            <div class="parent" @click.capture="_parent()">
                parent
                <div class="child" @click="_child()">
                    child
                </div>
            </div>
         </div>
         <!--  .once 一次性事件绑定 -->
         <button @click.once="_once()">once</button>

         <!-- 
            键盘事件修饰符
                .left 左键
                .right 右键
                .up 上键
                .down 下键
                .enter 回车
                .13 键码
          -->
          <input type="text" @keyup.up.13="_keyup">
    </div>
    <script>
         new Vue({
            el:"#app",
            data:{
                val:""
            },
            methods: {
                _click(n){
                    console.log(n);
                },
                yj(){
                    console.log(123);
                },
                _yeye(){
                    console.log("_yeye");
                },
                _parent(){
                    console.log("_parent");
                },
                _child(){
                    console.log("_child");
                },
                _once(){
                    console.log(123);
                },
                _keyup(e){
                    console.log(e.target.value);
                }
            },
        })
    </script>
</body>
</html>